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-   -   MIG regulator just quit (http://www.hotrodders.com/forum/mig-regulator-just-quit-212011.html)

Irelands child 01-08-2012 10:55 AM

MIG regulator just quit
 
I went to do a small welding job - turned on the gas. NADA. The regulator had died - actually had moisture in it. I was able to 'poke around' it's innards to make it work just long enough to do my little project. Since then, I have ordered a low end HTP flow regulator off EvilBay to replace the regulator. My question, what is the C25 flow supposed to be, no wind in my shop, (just normal hot air) ?

Dave W

matts37chev 01-08-2012 11:56 AM

I would think about 20 cfh for the doors closed :D

Irelands child 01-08-2012 12:44 PM

Quote:

Originally Posted by matts37chev
I would think about 20 cfh for the doors closed :D

That's what I remembered as well. I was just hoping that my memory was wrong and that I could use lots less now that I'll have a controllable flow device. The price of C25 has gotten into the $40+ range locally for my 55cf tank :pain:

oldred 01-08-2012 01:36 PM

As Matt said about 20 CF to start but just like a regulator every rig will have different requirements. Use the same method as adjusting a regulator, while welding on a piece of scrap slowly tun down the gas flow until porosity appears then turn it back up a couple of CF. You may find you need more than 20 CF and if so make sure the nozzle is sealed good at the back and not siphoning air into the flow ( a common problem that can cause a mysterious porosity problem) but you may also find you don't need quite that much flow. In that case you can save a lot of your gas over a few hours of welding since even a few CF of wasted gas adds up in a hurry, but again like Matt already said about 20 CF is most likely going to be the magic number.


BTW, you are much better off with that flow meter than a regulator anyway so you are upgrading your equipment not just replacing a broken part! :)

matts37chev 01-08-2012 08:04 PM

Quote:

Originally Posted by Irelands child
That's what I remembered as well. I was just hoping that my memory was wrong and that I could use lots less now that I'll have a controllable flow device. The price of C25 has gotten into the $40+ range locally for my 55cf tank :pain:

you would do fine with the bottom side of 20, somthing like 17-19 I am sure would be O.K. :thumbup:


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